Oxyacetylene and similar burner.



P. KRAUSS. OXYAGETYEENE AND SIMILAR BURNER. APPLICATION FILED APR. 16,1912.

1,095,580, Patented May 5, 1914.

@ fi lmml -iiii rinrrnio snares Parana ora on,

FRIEDRICH KRAUSS, d)? MUNICH, GERMANY.

OXYACETYLENE AND SIMILAR BURNER.

1 all whom, it may concern:

lie it known that I, FRIEDRICH :KRAUSS,

Specification of Letters Patent.

Application filed April 16, 1912. Serial No. 691,233v

varia, Germany,.formerly of Vienna, rius- 5 tria-Hungary, have. inventedcertain new and useful Improvements in Oxyacetylene and dimilar Burners.of which the followin is a specification.

TH invention relates to oxyacetylene and similar burners, by means ofwhich an intensely hot .flame may be produced. In burners of this type,it is the general practice to supply oxygen to the flame after ignitionof the inflammable gas in the air, and

was a result of this practice very considerable qua-ntitiesof soot aredeposited on the walls of the conduits before the oxygen is admitted,particularly if a carbonaceous gas, such as acetylene be employed. Thisdeposit detrimentally affects the actionof the burner.

and causes the dissemination of noxious odors in any inclosure whereinthe burner is used. Such soot deposit als'o frequently causes back flashof the flame, resulting in premature ignltion.

The principal object of my invention is to eliminate, in a burner ofthistype, the disadvantages above referred to and I purpose to'accomplish this object by providing sui a e means or 'xc u in a mosaeric t bl f o l d g t p air from the gas conduit as soon as the fuel.

supply of oxygen is permitted to flow to the flame. The means whicheffect this opera tion may be so constructed as to admit at- "mosphericair to the gas conduit immediately upon stoppage of the oxygen supply.v

The invention includes the novel structural features and combinations ofparts hereinafter particularly claimed, and fully described in thefollowing specification, referen'ce being'had to the accompanying draw-"ing, wherein- Fi'ure 1 is a fragmentary elevational view.illustratively embodying one form of it the invention; Fig. 2 is asimilar view of a somewhat modified form, intended particularly for useas a torch or blow pipe for welding metal; and Fig. 3 is a verticalsectional view of a further modified form of.

the invention.

Paton ted May 5, i914.

flame, atn'iospheric air is excluded from the gas conduit while when theflow-of oxygen is stopped no impediment is offered to the admission ofatmospheric air to the gas couduit. y I

llcii'erring to the drawing, and particularly to Fig. 1. thereof, Adenotes the gas conduit provided intermediate its ends with one or moreorif A constitutes, It will be understood that at one end the tube Acommunicates with a source of gas (not shown) and at the opposite endsupplies the gas to a burner tip or nozzle (not shown). Rotatablymounted on the tube A, is a sleeve B having orifices therein which areadapted to register with the orifices in the tube A. The sleeve B isprovided with,

or has formed integrally therewith. a rack.

F preferably circular in form, for a purpose to be presently described.Arranged adjacent the Bunsen tube A, is a tube or pipe 0. one end ofwhich opens into the tube A, and the other end of which is incommunication with a source of oxygen under pressure (not shown}. Thetube 0 is provided to suppl oxygen to the flame. The passage of oxygenthrough the tube 0 into the tube A is controlled by a valve 10, the stem11 thereof having fixed to one end a pinion E meshing wilh'thc rack F.and to the other end a haudle C by means of which the valve 10 may beoperated. When the valve 10 is turned by the handle C to permit oxygento flow through the pipe 0 into tube A, the pinion E will be revolved,causing the sleeve 13 to rotate until its intact portions entirely orpartially cover the orifices a in the tube B. By entirely closing; theseorifices, atmos: pheric air is excluded from the Bunsen tube, andsooting is thus eliminated. Upon movement of the valve 10 to entirelyclose oif the flow of oxygen, the sleeve B is rotated. in

the opposite direction, so that the orifices therein register with theorifices in the tube A and an adequate supply of atmospheric. air mayflow into the latter. By reason of this arrangement. it will be apparentthat the device may be employed either as an.

ordinary Bunsen burner, or as a burner in which gas and oxygen underpressure may be burned. that the device may be so operated as to onlypartially open the valve ,10; which will result in only partiallyclosing the orifices a in tube A, and conversely, by only partially ces0. The perforated tube 1 n efi'ect, a Bunsen burner.-

Itwill, of course, be apparentv n int closing the valve l0 the or I"only partially uncovered. in this manner the quantity of atmospheric airflowing to the Bunsen tube may be accurately proportioned to thequantity of oxygen supplied to the flame, oiflin other words,the-orifices a provide an adjustable auxiliary air supply means for aburner of this type.

In the form of invention shown in Fig. 2, A is the Bunsen tube providedwith orifices a, and B is a sleeve having orifices adapted to registerwith those in the tube A. The sleeve B is provided with a longitudinal,vertically extending rack K, in mesh with a pinion carriedon the stem ofthe valve L which governs the flow of oxygen through the pipe 0 Thevalve L is actuated by the handle G.

The operation of the modified form of invention just described issimilar to that of Fig. 1, except that the sleeve B is reciprocatedvertically, instead of being rotated, to open and close the orifices ain the Bunsen tube A.

In Figs. 1 and 2, I have shown a manually operable valve for controllingthe outflow oi oxygen and for actuating the sleeves B, while in- Fig. 3the-valve acts entirely automatically, and the movement of the sleeve Bbeing dependent on that of the valve is also automatic.

Referring to Fig. 3, A designates the Bunsentube having the orifice atherein."

and i3 is the sleeve having an orifice a therein. The lower end of theoxygen tube 0 opens into the lower end of a two part valve .casing Z,divided interiorly by an approximately central diaphragm D of flexiblematerial. The valve casing Z communicates, by means of a flexible tubeor hose W, with a source of oxygen (not shown), ing from-the sleeve Bsubstantially at right angles to the axis thereof is an arm 12, near theouter end .of which is secured a stem at, passing vertically throughapproximately the central part of the valve casing Z; At its lower end,the stem 14 is provided with a conical valve plug N adapted to engagethe seat a: into which the admission end of the pipe 0 opens. The valveplug is normally forced against the seat a: by a spiral spring Sencircling the upper part of the valve stem u, one end of said springengaging the upper inner part of the valve casing Z and the other endpressing downwardly on a collar T carried by'the stem u intermediate itsthe valve casing the spring S will maintain ends. When there is no flowof oxygen through the tube W into the chamber M of the valve plug Nagainst itsseat 00, whereby the sleeve B will be in its lowermostposition, the orifice a thereof registering with the orifice a, in thetube A and admitting atmospheric air to the latter. As soon as oxygen isadmitted to the valve casing Z the Proj ectcha n will increase sat liraise the .iaphragm D against the tension of spring 55. raising thediauhragm, the stema is raised, unseating the plug hi whe eby gen ispermitted to iiow into the pipe '0, and elevating the sleeve 3* so thatan intact portion thereof either entirely or partially covers theorifice a in the tube A thus reducing or entirely cutting oil the supplyof ospheric air to the latter. When the ox n supply to tube W isdiscontinued the S will again depress stem a, seating the N and bylowering the sleeve B cause orifices a and a to register.

I desire it to he understood that while I detail, the same issusceptible of modification, without dep. ting from the spirit of theinvention defined by the scope of the appended claims.

What I claim is z- 1 LA burner of the character specified, embodyingtherein a gas conduit, an oxygen conduit, means for controlling the flowof oxygen through said oxygen conduit, means for supplying air to thegas conduit and means actuated from said first named means ,forcontrolling the flow of atmospheric air to said gas conduit.

2. Aburner of the character specified, embodying therein a gas conduithaving orifices-' through which air may be supplied to said gas conduit,an oxygen conduit, means for controlling the How of oxygen through saidoxygen conduit, and a sleeve operable by the movement of said means tocover or uncover the orifices in said gas conduit. to

ated by the latter for closing said orifices when said oxygen conduit isopened by the valve, and opening said orifices when said oxygen conduitis closed by the valve.

4. A bturncr of the character specified, embodying therein a gasconduit, means for supplying air to'the gas conduit, means forcontrolling the flow of atmospheric air thereto, amoxygen conduit, avalve controlling the flow of oxygen throughsaid oxythe flow ofatmospheric air thereto, a stem casing having therein avalve seat intowhich conduit, an automatically operating valve crease in pressuretherein to raise said stem for controlling the flow of oxygen throughsaid oxygen conduit, means for supplying air to said gas conduit andmeans actuated by the movement of said valve for controlling the fiow ofatmospheric air to said gas conduit.

6. A burner of the character specified, embodying therein a gas conduit,an oxygen conduit, an automatically operating valve for controlling theflow of oxygen through said oxygen conduit, means for normally closingsaid valve, means for supplying air to said gas conduit and meansconnected to said valve for controlling the flow of atmospheric air't-osaid gas conduit.

7. A burner of the character specified, cmbodying'therein a gas conduit,an oxygen conduit, a valve casing in communication with one end of saidoxygen conduit, means for supplying air to said gas conduit, meansmovable on said gas conduit for-controlling in said casing and connectedto said second named means, and means within said casing and adapted tobe actuated by the pressure therein for actuating said stem to move saidsecond named means on said gas conduit.

8. A burner of the character specified, embodying therein a gas conduithaving orifices through which air may be supplied to' said gas conduit,an oxygen conduit, a valve one end of the oxygen conduit opens, anorificed sleeve movable along said gas conduit, astem reciprocable insaid casing and connected to said sleeve, a valve plug at one end ofsaid stem, means for normally depressing said plug againstsaid seatwhereby the orifices in said gas conduit and said sleeve, respectively,register, and means within said casing and responding toinand to controlthe flow of of said valve.

to partially or entirely close the orifices in the gas conduit. I 9. Aburner of the character specified,

whereby said auxiliary air supply is in versely proportioned to saidoxygen'supply.

10. A' burner of the character specified,

embodying therein a gas conduit .having orifices through which air maybe admitted to said gas conduit, an oxygen conduit for supplying oxygento admix with the gas fed to said gas conduit, and means for varying thearea of said orifices in inverse proportion to the quantity of oxygensupplied through said oxygen conduit.

11. A burner of the character specified, embodying therein a gas conduithaving orifices through which'air may be admitted to said gas conduit,an oxygen conduit for supplying oxygen to admix with the gas fed to saidgas conduit, means for varying the area of said orifices relatively-tothe quantity of oxygen supplied through said oxygen conduit, and meansoperable to simultaneously operate said first named means oxygen throughsaid oxygen-conduit.

12. A burner of the character specified, embodying therein a gas conduithaving orifices through which air may be admitted to said gas conduit,an oxygen conduit for supplying oxygen to admix. with the gas fed tosaid gas conduit, a sleeve movable on said gas conduit for varying thearea of the orifices in the latter, a valve for controlling the flow ofoxygen through said oxygen conduit, and cooperating means on said sleeveand said valve whereby, upon movement of the latter, said sleeve isactuated to a degree corresponding with the extent of movement FRIEDRICHKRAUSS.

Witnesses:

A. V. W. Co'rrER, FRIEDRICH V. BRficKNER.

